Relay Box (Located In The Cab); Electronic Controller - Wittke StarLight Maintenance Manual

Part #: 90309

Relay Box (located in the cab)

The relay logic consists of a control system made up with
traditional relays. To troubleshoot such a system, please refer to
the electrical schematic provided with the truck and use the
appropriate tools.
• Main relay: A high current relay centralizes power
to the relay box in the cab.
• Circuit breakers: Manual reset breakers protect
systems from excessive current.
• Relays: A relay is a series of switches influenced by
a common coil but controlled from a remote location,
such as a proximity switch.
• Diodes: Diodes ensure the current conducts in one
direction only.
• Timer: The timer is a relay switch used to delay the
return of the packer once it has completed a pack
cycle. It is wired in the pack system and is set to
2 seconds. If the truck is equipped with an electronic
controller, it is not possible to adjust the delay, which
is also set, in this case, to 2 sec.

Electronic Controller

Some trucks are equipped with an electronic controller, making
the truck more reliable by reducing the number of wires and
components. Electrical maintenance is different from relay logic.
The use of an electronic controller enables LabriePlus to
perform remote troubleshooting, which facilitates the debugging
process. Labrie Environmental Group offers training on this
technology. To know more about electronic controllers and
training schedule, please call LabriePlus.
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